LaMotte CON 6 PLUS Manuale utente

PREFACE

This manual serves to explain the use of the Conductivity and TDS

handheld meters. The models covered are the CON 6 PLUS and TDS 6

PLUS.

This manual functions in two ways: ﬁrst as a step by step guide to

operating the meter; second, as a handy reference guide.

This manual is written to cover as many anticipated applications of

the Conductivity and TDS handheld meters as possible. If there are

questions about the use of this meter contact the LaMotte Tech Service

Department.

LaMotte Company will not accept any responsibility for damage or

malfunction to the meter caused by improper use of the instrument.

The information presented in this manual is subject to change without

notice as improvements are made, and does not represent a commitment

on the part of LaMotte Company.

*WARNING: Reagents marked with an * are considered to be potential

health hazards. To view or print a Safety Data Sheet (SDS) for these

reagents go to www.lamotte.com. Search for the four digit reagent code

number listed on the reagent label, in the contents list or in the test

procedures. Omit any letter that follows or precedes the four digit code

number. For example, if the code is 4450WT-H, search 4450. To obtain a

printed copy, contact LaMotte by email, phone or fax.

Emergency information for all LaMotte reagents is available from Chem-

Tel: (US, 1-800-255-3924) (International, call collect, 813-248-0585).

WARNING! This set contains chemicals that

may be harmful if misused. Read cautions on

individual containers carefully. Not to be used by

children except under adult supervision.

TABLE OF CONTENTS

1. INTRODUCTION 5

2. GETTING STARTED 6

2.1 Description of Keypad Functions 6

2.2 Description of LCD Annunciators 7

2.3 Inserting & Removing the Rubber Boot/Stand 8

2.4 Inserting New Batteries 8

2.5 Battery Replacement 9

2.6 Electrode Information 9

2.7 Connecting the Probe 10

2.8 Switching the Meter On 11

2.9 Changing Mode 12

3. CALIBRATION 13

3.1 Important Information on Meter Calibration 13

3.2 Preparing the Meter for Calibration 14

3.3 Selection of Auto or Manual Calibration ( CON 6 PLUS) 14

3.4 Using Automatic Calibration ( CON 6 PLUS) 15

3.5 Manual Calibration 16

3.6 Temperature Calibration 17

4. MEASUREMENT 18

4.1 With Automatic Temperature Compensation (ATC) 18

4.2 Without ATC (Manual Temperature Compensation) 18

4.3 Taking Measurements 18

4.4 Using Manual Ranging Function

( CON 6 PLUS, TDS 6 PLUS) 19

4.5 HOLD Function 20

5. ADVANCED SETUP FUNCTIONS 20

5.1 Advanced Setup Overview 20

5.2 Select Cell Constant ( CON 6 PLUS, TDS 6 PLUS ) 22

5.3 Automatic Calibration ( CON 6 PLUS only) 22

5.4 Setting the TDS Factor ( TDS 6 PLUS only) 23

5.5 Temperature Coecient 23

5.6 Normalization Temperature 24

5.7 Single-Point Calibration ( CON 6 PLUS, TDS 6 PLUS ) 24

5.8 Restore Factory Default Values 25

6. PROBE CARE AND MAINTENANCE 25

7. TROUBLESHOOTING 26

8. SPECIFICATIONS / FEATURES 27

9. CONDUCTIVITY THEORY 28

10. CALIBRATION TIPS 31

11. CALCULATING TDS CONVERSION FACTOR 31

12. CALCULATING TEMPERATURE COEFFICIENTS 32

13. REPLACEMENT PARTS AND ACCESSORIES 33

14. WARRANTY 33

15. REPAIRS 34

1. INTRODUCTION

The CON 6 PLUS and TDS 6 PLUS microprocessor-based handheld

meters are economical and easy to use. They have a large custom LCD

(Liquid Crystal Display) for clear and easy reading.

The CON 6 PLUS measures conductivity (S/cm or mS/cm) and

temperature (°C) while the TDS 6 PLUS measures total dissolved

solids (TDS) in parts per million (ppm) or parts per thousand (ppt) and

temperature (°C). Each meter measures up to 5 dierent ranges and will

automatically switch to appropriate measuring range.

The meters include a probe (cell constant K = 1.0) with built-in

temperature sensor, rubber boot, 4 alkaline “AAA” batteries and

instruction manual. For additional information, see Section 13 —

REPLACEMENT PARTS AND ACCESSORIES.

Read this manual thoroughly before operating the meter.

2. GETTING STARTED

2.1 Description of Keypad Functions

The meter has 6 keys on the splash-proof keypad. Some buttons have

multiple functions depending on the mode of operation.

ON/OFF Powers meter on and o. Meter starts up in the

measurement mode that was last used.

CAL Enters into calibration mode. Pressing while in calibration

mode will abort calibration without conﬁrming value.

MODE Selects desired measurement mode. When pressed

simultaneously with ON/OFF, it will take proceed the

SETUP mode. See ADVANCED SETUP section for more

information.

HOLD Freezes measured reading. Press again to resume live

reading.

ENTER Conﬁrms calibration value in calibration mode and

conﬁrm selections in SETUP mode.

Increments values during calibration mode or scroll

through SETUP. Activates manual ranging function during

conductivity / TDS measurement.

Decrements values during calibration mode.

2.2 Description of LCD Annunciators

The meter has a large custom LCD that consists of 4-digit segments plus

annunciators for uS/mS (CON 6 PLUS), ppm/ppt (TDS 6 PLUS), and °C

(temperature).

1. Primary display

2. Parts per million (ppm) or parts per thousand (ppt)

(TDS 6 PLUS)

3. Millisiemens/cm (mS) or microsiemens/cm (S)

indicator (CON 6 PLUS)

4. Temperature indicator

5. Percentage indicator for temperature coecient

6. “LO” = low battery condition

7. “HO” = HOLD function is activated and reading is

frozen

pptm

HO LO %

C°

2.3 Inserting & Removing the Rubber Boot/Stand

1. To remove the meter from the rubber boot, push out the bottom

edge of the meter until it is completely out of the boot. Ensure

that the probe cables are not connected. Figure 1.

2. To insert the meter into the rubber boot, slide in the top of the

meter before pushing the bottom edge of the meter down to set it

into position. Lift up the stand at the back of meter for bench top

applications. Figure 2.

2.4 Inserting New Batteries

The battery compartment is found at the back of the instrument. To open

the battery compartment, push the cover in the direction of the arrow

and lift up. Note the polarity of the batteries before inserting them into

position. After the batteries have been replaced, reposition the cover and

press down until it locks.

Figure 1 Figure 2

2.5 Battery Replacement

The “LO” annunciator on the LCD alerts when battery power is running

low.

Caution: Power othe meter before changing battery.

2.6 Electrode Information

The meter includes a probe with a BNC connector

having a nominal cell constant of k = 1.0, and a built-in

temperature sensor. The Ultem-body housing has good

chemical resistant properties. The probe design oers fast

temperature response and reduces air entrapment, ensuring

accurate, repeatable, and stable readings.

The wettable materials of the probe include:

1. Polyetherimide (Ultem) – protective probe guard

2. Polybutylterphalate (Valox) – sensor housing

3. Stainless Steel (SS 304) – 2 steel bands

The protective probe guard can be removed temporarily

for maintenance but must be reattached before

measurement and calibration. Erroneous results will occur

during calibration and measurement if the probe guard is

not used.

Always immerse the probe beyond upper steel band for

best results. Use the ﬁll line on the outside of the probe

guard for reference.

“LO” Battery Condition

1. DO NOT perform

calibrations or

measurements without the

protective probe guard in

place.

2. Immersion above the

protective guard is not

recommended. The cable

can be submerged brieﬂy

but is not designed for

continuous immersion.

See “Probe Care and Maintenance”

for more information.

2.7 Connecting the Probe

1. To connect the probe, align the connector slots with the posts of

the meter socket and rotate the connector clockwise until it locks.

2. To remove the probe, rotate the connector in anti-clockwise

direction until it unlocks, and slide the connector othe socket.

3. Insert the mini phono jack of the temperature sensor into the

socket on the meter as shown below.

2.5 mm mini phono

jack for

temperature sensor

BNC

connector for

probe

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